Advisory Details

December 23rd, 2021

Microsoft Azure Defender for IoT maintenanceWindow Endpoint SQL Injection Privilege Escalation Vulnerability

ZDI-21-1595
ZDI-CAN-14189

CVE ID CVE-2021-41365
CVSS SCORE 8.8, (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
AFFECTED VENDORS Microsoft
AFFECTED PRODUCTS Azure Defender for IoT
VULNERABILITY DETAILS

This vulnerability allows remote attackers to escalate privileges on affected installations of Microsoft Azure Defender for IoT. Authentication is required to exploit this vulnerability.

The specific flaw exists within the maintenanceWindow endpoint. The issue results from the lack of proper validation of a user-supplied string before using it to construct SQL queries. An attacker can leverage this vulnerability to escalate privileges to resources normally protected from the user.

ADDITIONAL DETAILS Microsoft has issued an update to correct this vulnerability. More details can be found at:
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-41365
DISCLOSURE TIMELINE
  • 2021-09-16 - Vulnerability reported to vendor
  • 2021-12-23 - Coordinated public release of advisory
CREDIT Anonymous
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